When working with Active Directory, LDAP queries are essential for retrieving specific user data. The core challenge lies in combining multiple conditions correctly. For our case, we need to:

• Filter for user objects (objectClass=person or objectClass=user)
• Exclude disabled accounts (userAccountControl bitmask)
• Include only members of a specific security group

Here's the proper LDAP filter that accomplishes all requirements:

(&
  (objectClass=user)
  (memberOf=CN=Google Apps Users,OU=Groups,DC=domain,DC=com)
  (!(userAccountControl:1.2.840.113556.1.4.803:=2))
)

Key components explained:

• objectClass=user - Targets user accounts (more precise than 'person')
• memberOf= - Specifies group membership (full distinguished name required)
• userAccountControl:1.2.840.113556.1.4.803:=2 - Bitwise AND operation to check for disabled accounts

PowerShell Example

Get-ADUser -LDAPFilter "(&(objectClass=user)(memberOf=CN=Google Apps Users,OU=Groups,DC=domain,DC=com)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))"

C# .NET Implementation

DirectoryEntry entry = new DirectoryEntry("LDAP://DC=domain,DC=com");
DirectorySearcher search = new DirectorySearcher(entry);
search.Filter = "(&(objectClass=user)(memberOf=CN=Google Apps Users,OU=Groups,DC=domain,DC=com)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))";

foreach(SearchResult result in search.FindAll())
{
    // Process enabled users
}

Many administrators encounter these issues:

For GADS configuration, consider these additional filters:

# Sync only mail-enabled users
(&
  (objectClass=user)
  (memberOf=CN=Google Apps Users,OU=Groups,DC=domain,DC=com)
  (!(userAccountControl:1.2.840.113556.1.4.803:=2))
  (mail=*)
)

Remember to test your queries with a small subset before applying to production synchronization.

When working with Active Directory synchronization, a common need is to query users who meet two specific conditions:

1. Belong to a particular security group
2. Have active (non-disabled) accounts

The query you attempted was close but needs refinement. Here's the proper format:

(&
  (objectClass=user)
  (memberOf=CN=Google Apps Users,OU=Groups,DC=domain,DC=com)
  (!(userAccountControl:1.2.840.113556.1.4.803:=2))
)

1. Object class filtering: Using objectClass=user is more precise than objectClass=person for Active Directory users.

2. Group membership: The memberOf attribute requires the full distinguished name of the group. Replace with your actual group DN.

3. Account status check: The userAccountControl bitmask operation (:1.2.840.113556.1.4.803:) properly checks for disabled accounts (bit 2).

PowerShell Example:

$ldapFilter = "(&(objectClass=user)(memberOf=CN=Google Apps Users,OU=Groups,DC=domain,DC=com)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))"
Get-ADUser -LDAPFilter $ldapFilter

C# Example:

DirectoryEntry entry = new DirectoryEntry("LDAP://DC=domain,DC=com");
DirectorySearcher search = new DirectorySearcher(entry);
search.Filter = "(&(objectClass=user)(memberOf=CN=Google Apps Users,OU=Groups,DC=domain,DC=com)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))";

foreach(SearchResult result in search.FindAll())
{
    // Process each enabled user in the group
}

For GADS implementation, you would use this LDAP query in your synchronization rules. Additionally consider:

• Setting up attribute mapping between AD and Google Workspace
• Configuring the synchronization schedule
• Implementing the suspend option for disabled accounts

For large directories:

• Add index hints if querying frequently
• Consider paging for result sets over 1000 users
• Cache results when possible